Question

During a Lunar eclipse what is the penumbra
It is part of earth's shadow where the sun is completely blocked

Answer 1

During a lunar eclipse, the penumbra is the outer part of Earth's shadow where the sunlight is partially blocked. It is the region where only a portion of the Sun's light is obscured by the Earth. In contrast, the umbra is the inner part of the shadow where the Sun is completely blocked, leading to a total lunar eclipse if the Moon passes through this area. During a penumbral lunar eclipse, the Moon passes through the penumbral shadow, causing a subtle shading on its surface, but it does not result in a dramatic darkening as seen in a total eclipse.